Hibernate framework Architecture:
It includes many objects such as
✔️ persistent object
✔️ session factory,
✔️ transaction factory,
✔️ connection factory,
✔️ session,
✔️ transaction etc.
The Hibernate architecture is categorized in four layers
✔️Java application layer
✔️Hibernate framework layer
✔️Backend API layer
✔️Database layer
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✔️ Open Source and Lightweight
✔️ Fast Performance
✔️ Database Independent Query
✔️ Automatic Table Creation
✔️ Simplifies Complex Join
✔️ Provides Query Statistics and Database Status
Disadvantages
✔️ It can’t be learnt easily.
✔️ The debugging due to xml files and performance tuning becomes difficult at times.
✔️ Hibernate is a bit slower than pure JDBC as it is generating lots of SQL ✔️ statements in runtime.
✔️ It advisable to use pure JDBC for batch processing.
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✔️ Developers use JDBC for communicating with the DB and the java app.
✔️ JDBC programming needs to create SQL statement, execute the statement and then process the results, Also the runtime exceptions are needed to be handled.
✔️ To effectively solve above issue, ORM tool was developed.
✔️ The ORM tool generates the SQL statements, executes the SQL statement and finally processes the result.
✔️ It also handles the exceptions occurred in the program.
Features of Hibernate
✔️ Object/Relational Mapping
✔️ JPA Provider
✔️ Idiomatic (Natural) persistence
✔️ High Performance
✔️ Scalability
✔️ Reliable
✔️ Extensibility
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➡️ Hibernate is the ORM tool to transfer the data between a java (object) app and a database (Relational) in the form of the objects.
➡️ It is an open source, light weight tool given by Gavin King.
➡️ It is a non-invasive (don’t force) framework, it doesn’t force the developers to extend/implement any class/interface, there are only POJO classes so its light weight.
➡️ It can run with-in or with-out server, it will suitable for all types of java apps (desktop or servers)
➡️ It is purely for persistence (to store/retrieve data from DB).
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EJB types
➡️ Session Bean : Session bean represents a single client inside the App Server.
➡️ Entity Bean : Entity bean represents a business object in a persistent storage mechanism.
➡️ Message Driven Bean : A message-driven bean is an enterprise bean that allows J2EE applications to process messages asynchronously.
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When to Use Enterprise Java Beans
➡️ To Simplify development of large scale enterprise level app.
➡️ To focus only on business logic of the app.
➡️ When the app is distributed : When the resources and data are distributed across multiple sites, Choose EJB when application will need to support multiple, concurrent users.
➡️ When the app is performance-centric : use of EJBs and the application server provide high performance and very good scalability.
➡️ Manage transactions : When transaction management is required to ensure data integrity, EJBs may be used.
➡️ Manage security : Separation of Business Logic
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An Enterprise Java Bean is:
➡️ A reusable component
➡️ A Java object
➡️ An encapsulation of enterprise business logic and data
➡️ Executed in a Containers
What is EJB?
➡️ EJB is an architecture for setting up program components, that run in the server, to develop modular construction of enterprise app.
➡️ It is reusable in multiple apps.
➡️ It is built on the JavaBeans technology to distribute components. It encapsulates the business logic of a web app.
➡️ It provides an architecture to develop and deploy component based enterprise apps.
Summary of video:
➡️ Java Bean Vs Enterprise Java Bean
➡️ Difference between RMI and EJB
➡️ EJB Architecture
➡️ Benefits of EJB
➡️ Restriction on EJB
➡️ Disadvantages of Enterprise Java Beans
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If you fail to take actions like Failure of individual data from Computer, Misuse of Identity, Stalk (hunt) or harass an individual, group, or organization using Internet etc.,
CYBER-SAFETY ACTIONS
Cyber Safety Tips 👇
✅ હંમેશા લેટેસ્ટ સોફ્ટવેર ઉપડૅટ ઇન્સટોલ કરવા
✅ એન્ટી વાયરસ સોફ્ટવેર નો ઉપયોગ કરવો
✅ ફાયરવોલ સોફ્ટવેર નો ઉપયોગ કરવો
✅ કોઈ સોફ્ટવેર કે જેમ વારંવાર એડ આવતી હોય તો તેનો ઉપયોગ ન કરવો
❌ તમારા આઈ.ડી. અને પાસવૉર્ડ કોઈ સાથે શેર ન કરવા
❌ હંમેશા એવો પાસવૉર્ડ સેટ કરવો કે જેનો કોઈ અનુમાન ન કરી શકે.
❌ વેબસાઇટ અને મોબાઇલ એપ માંથી જરૂરી ન હોય ત્યારે લોગ આઉટ થઇ જવું.
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Cyber-safety is the safe and responsible use of Information and Communication Technology.
Cyber Securities Outlines
Following discovered in this video tutorial-
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